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21327 Yabuzuka (1997 AJ13)
Classification: Main-belt Asteroid          SPK-ID: 2021327
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08957973252509463 3.6086e-08  
a 2.414227842314082 7.796e-09 au
q 2.19796195794495 8.6569e-08 au
i 8.202812698886806 4.7924e-06 deg
node 348.8257086030549 2.1773e-05 deg
peri 76.46646945237741 3.6346e-05 deg
M 185.1630379324973 2.7677e-05 deg
tp 2459865.921086374845
(2022-Oct-13.42108637)
0.00010577 TDB
period 1370.142721894561
3.75
6.6367e-06
1.817e-08
d
yr
n .2627463506153659 1.2727e-09 deg/d
Q 2.630493726683214 8.4944e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1826  
   data-arc span      18522 days (50.71 yr)  
   first obs. used      1969-10-08  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:43:30  

Additional Information
 Earth MOID = 1.22704 au 
 Jupiter MOID = 2.59659 au 
 T_jup = 3.498 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.43   n/a E2021B10  
diameter diameter 2.514 km 0.689 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.404   0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21327 Yabuzuka           Discovered 1997 Jan. 11 by T. Kobayashi at Oizumi.
Yabuzuka, the abbreviated name for Yabuzuka-Honmachi town, in Nitta-Gun county, in the southeastern part of Gunma prefecture, had a population of 19 \, 000. In 2005 the town became part of new Ota city, when it merged with Ota city, Ojima town and Nitta town.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-10-08Last Updated: 2015-01-12

Alternate Designations
 1997 AJ13 = 1969 TP7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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